CN212297748U

CN212297748U - Anti-drop rush repair water diversion tee joint

Info

Publication number: CN212297748U
Application number: CN202020455314.1U
Authority: CN
Inventors: 陈金钻
Original assignee: Benxing Valve Manufacturing Co ltd
Current assignee: Benxing Valve Manufacturing Co ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2021-01-05
Anticipated expiration: 2030-04-01

Abstract

The utility model provides an anticreep rush-repair water diversion tee bend that structural design is reasonable, the operation is simple and easy, can realize quick dismantlement, including the valve body, intake passage, two water outlet channel have been seted up on the valve body, be provided with the ball core that is used for controlling fluid opening and close and trend between intake passage and the water outlet channel, valve rod has been seted up to valve body upper end, first passageway is worn to be equipped with by the first passageway, valve rod upper end is provided with the piece that opens and close that is used for driving the valve rod rotation, lower tip and the ball core is connected, be provided with first sealing device respectively between intake passage, water outlet channel and the ball core, the delivery pipe that can buckle wantonly, flexible on the free end of intake passage, water outlet channel dismantled and assembled respectively, the delivery pipe with but the first dismouting device of quick dismouting is provided respectively between intake passage, the water outlet channel, the other end of the water supply pipe is provided with a second dismounting device used for being quickly dismounted from the underground pipeline.

Description

Anti-drop rush repair water diversion tee joint

Technical Field

The utility model relates to a valve class technical field, in particular to water diversion tee bend is salvageed to anticreep.

Background

Underground water supply pipes for supplying tap water often cause leakage of the pipe body due to some reasons, such as aging of the pipe body or an excessive water pressure bursting the pipe body or an inadvertent puncture of the pipe when working on the ground, etc., requiring replacement of the damaged pipe body. In order to prevent excessive leakage of water from affecting traffic, the water supply source is shut off when a pipe break is discovered, which results in no water being available to the user for later use. When the water pipe that takes place on traffic hub or the more road side of vehicle flow is damaged, in order not to influence the traffic, the maintenance team can select evening to carry out the maintenance operation, has prolonged the time of water pipe maintenance, still can further extend between the maintenance when the operation environment is abominable or lacks the material of replacement, seriously influences user's water, brings inconvenience for user's daily life.

In order to solve the water problem of the user when the pipeline is maintained, the utility model discloses produce from this.

SUMMERY OF THE UTILITY MODEL

Therefore, to foretell problem, the utility model provides a water distribution tee bend is salvageed to anticreep that structural design is reasonable, the operation is simple and easy, can realize quick dismantlement.

In order to solve the technical problem, the utility model discloses the solution who takes does: an anti-drop rush repair water diversion tee joint comprises a valve body, the valve body is provided with a water inlet channel and two water outlet channels, a ball core for controlling the opening and closing and the trend of the fluid is arranged between the water inlet channel and the water outlet channels, the upper end part of the valve body is provided with a first channel, a valve rod penetrates through the first channel, the upper end part of the valve rod is provided with an opening and closing piece for driving the valve rod to rotate, the lower end part of the valve rod is connected with the ball core, first sealing devices are respectively arranged among the water inlet channel, the water outlet channel and the ball core, free ends of the water inlet channel and the water outlet channel are respectively detachably provided with a water supply pipe which can be bent and stretched freely, first dismounting devices which can be quickly dismounted are respectively arranged between the water supply pipe and the water inlet channel and between the water outlet channel, the other end of the water supply pipe is provided with a second dismounting device used for being quickly dismounted from the underground pipeline.

The further improvement is that: the first dismounting device comprises a first fixed sleeve, a first sliding sleeve and a first inserting block, the first fixed sleeve is fixedly arranged on the inner wall of the water inlet channel or the water outlet channel, the first sliding sleeve can be arranged on the inner wall of the first fixed sleeve in a sliding manner, the first inserting block is detachably arranged in the first sliding sleeve in a penetrating manner, the first inserting block is provided with a first water passing channel for water to pass through, one end of the first fixed sleeve, which is close to the inner part of the valve body, is fixedly provided with a plurality of first elastic clamping plates, the free ends of the first elastic clamping plates extend inwards and incline towards the central axis of the first fixed sleeve, the first inserting block is provided with a first clamping groove for the free end of the first elastic clamping plate to extend into, the first sliding sleeve can enable the first elastic clamping plates to be separated from the first clamping groove through sliding, and the other end of the first inserting block is fixedly connected with the water supply pipe, and a second sealing device for preventing water body leakage is arranged between the first insert block and the water inlet channel or the water outlet channel.

The further improvement is that: the first sliding sleeve and the first fixed sleeve are provided with a plurality of first sliding blocks therebetween, the first sliding blocks are fixedly arranged on the first sliding sleeve, the first fixed sleeve is axially provided with a plurality of first sliding grooves matched with the first sliding blocks, and the first sliding blocks can be slidably arranged in the first sliding grooves.

The further improvement is that: the second sealing device comprises an installation boss, a first sealing ring and a second sealing ring, the installation boss is radially arranged on the inner wall of the water inlet channel or the water outlet channel, the first sealing ring is arranged on the installation boss, the second sealing ring is arranged on the first insertion block, and the first sealing ring and the second sealing ring are mutually compressed.

The further improvement is that: the second dismounting device comprises a second dismounting device body, the second dismounting device body is provided with a second water channel for water to pass through, the connecting end of the second dismounting device body and the water supply pipe is provided with a second fixing sleeve, a second sliding sleeve and a second insert block, the second fixing sleeve is fixedly arranged on the inner wall of the second dismounting device body, the second sliding sleeve can be arranged on the inner wall of the second fixing sleeve in a sliding way, the second insert block is detachably arranged in the second sliding sleeve in a penetrating way, the second insert block is provided with a third water channel for water to pass through, one end of the second fixing sleeve close to the inner part of the second dismounting device body is fixedly provided with a plurality of second elastic clamping plates, the free ends of the second elastic clamping plates extend inwards and incline to the central axis of the second fixing sleeve, and the second insert block is provided with a second clamping groove for the free end of the second elastic clamping plate to extend into, the second sliding sleeve can enable the second elastic clamping plate to be separated from the second clamping groove through sliding, the other end of the second inserting block is fixedly connected with the water supply pipe, a third sealing device for preventing water leakage is arranged between the second inserting block and the second dismounting device body, and a locking device for fixing the second dismounting device body on an underground pipeline is arranged at the connecting end of the second dismounting device body and the underground pipeline.

The further improvement is that: the locking device comprises a sleeve fixedly arranged on the side wall of the second dismounting device body, a plurality of arc pressing pieces are arranged outside the sleeve, one ends of the arc pressing pieces are fixedly arranged on the side wall of the second dismounting device body, a distance for the pipe wall of an underground pipeline to stretch into is reserved between the pressing pieces and the sleeve, continuous external threads are arranged outside the second dismounting device body and on the arc pressing pieces, a locking ring for driving the arc pressing pieces to tightly press the sleeve is sleeved on the second dismounting device body, the diameter of the inner wall of the locking ring is gradually reduced from the arc pressing pieces to the diameter of the inner wall of the second dismounting device body in the direction of the second dismounting device body, and internal threads matched with the external threads on the second dismounting device body and the arc pressing pieces are arranged on the inner wall of the locking ring.

The further improvement is that: and the outer wall of the sleeve and the inner wall of the arc-shaped pressing sheet are respectively provided with an elastic sealing layer.

The further improvement is that: the third sealing device comprises an installation concave table which is radially arranged along the inner wall of the second dismounting device body, a third sealing ring is arranged on the installation concave table, a fourth sealing ring is arranged on the second inserting block, and the third sealing ring and the fourth sealing ring are mutually compressed.

The further improvement is that: the water supply pipe is a corrugated pipe.

By adopting the technical scheme, the beneficial effects of the utility model are that: use the utility model has the advantages of it is following:

1. the utility model can be used when the time required by the replacement of the underground pipeline is longer, the water consumption of a user is not influenced when the underground pipeline is maintained, the disassembly and the assembly of the utility model are very convenient, only the second disassembly and assembly device is firstly inserted into the underground pipeline and connected by the fastening mode of screw thread locking, and then the first insert block and the second insert block on the water supply pipe are directly inserted into the first sliding sleeve on the three-way valve body and the second sliding sleeve on the second disassembly and assembly device to complete the connection; when the underground pipeline is disassembled, the locking ring is rotated reversely to remove the pressure of the arc-shaped pressing sheet and then the underground pipeline is pulled out; the disassembly between the water supply pipe and the valve body and the second disassembly and assembly device is realized by only sliding the first sliding sleeve and the second sliding sleeve and then pulling out the first insert block and the second insert block, the disassembly and assembly process is simple, the quick disassembly and assembly can be realized, and the time is saved for the maintenance of the underground pipeline.

2. The utility model provides a delivery pipe adopts and to buckle wantonly, flexible bellows, expand the bellows according to actual connection's distance length when using, can adapt to the connection between the pipeline of different distances, need not change the delivery pipe of other length, can not influence everybody's walking because of delivery pipe homemade during short distance connection yet, can buckle into arbitrary shape simultaneously, can avoid stumbling the pedestrian around establishing at edge or corner position with the delivery pipe, can fold the bellows during accomodating, can reduce the accommodation space of bellows.

3. The utility model discloses can realize resumeing the twice water route simultaneously, can select to put through one water route or twice water route according to the connection condition of pipeline when using, avoid needing to use two sets of equipment when resumeing the twice water route, can reduce the equipment quantity that the maintenance team went on a journey and carried, alleviate the work load of maintenance team.

Drawings

Fig. 1 is the utility model discloses an anticreep is salvageed and is being looked forward the structural schematic diagram of tee bend.

Fig. 2 is the utility model discloses the interior structure schematic diagram of water distribution tee bend is salvageed to the anticreep.

Figure 3 is the partial structure enlargements of A department in the tee bend of dividing is salvageed to anticreep of figure 2 utility model embodiment.

Figure 4 is the partial structure enlargements of B department in the tee bend of dividing is salvageed to anticreep of figure 2 utility model embodiment.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 4, the embodiment of the present invention discloses an anti-dropping rush-repair water-diversion tee joint, which includes a valve body 10, the valve body 10 is provided with a water inlet channel 11 and two water outlet channels 12, the two water outlet channels 12 are in a straight shape, the water inlet channel 11 is perpendicular to the water outlet channels 12, a ball core 13 for controlling the opening and closing and the trend of fluid is arranged between the water inlet channel 11 and the water outlet channels 12, the ball core 13 is provided with a T-shaped water through hole 14 matched with the water inlet channel 11 and the water outlet channels 12, the upper end of the valve body 10 is provided with a first channel, a valve rod 15 is arranged in the first channel, the upper end of the valve rod 15 is provided with an opening and closing member for driving the valve rod 15 to rotate, the opening and closing member is a rotating handle 16, one end of the rotating handle 16 is rotatably sleeved on the valve rod 15, the lower end of the valve rod 15 is connected with the ball core 13, first sealing devices are respectively arranged among the water inlet channel 11, the water outlet channel 12 and the ball core 13, the first sealing device is a fifth rubber sealing ring 17, the fifth rubber sealing ring 17 is arranged on the inner wall of the valve body 10, free ends of the water inlet channel 11 and the water outlet channel 12 are respectively detachably provided with a water supply pipe 18 which can be bent and stretched at will, the water supply pipe 18 is a corrugated pipe, first dismounting devices which can be quickly dismounted and mounted are respectively arranged among the water supply pipe 18, the water inlet channel 11 and the water outlet channel 12, and the other end of the water supply pipe 18 is provided with a second dismounting device which can be quickly dismounted and mounted with an underground pipeline.

The first dismounting device comprises a first fixed sleeve 19, a first sliding sleeve 20 and a first inserting block 21, the first fixed sleeve 19 is fixedly arranged on the inner wall of the water inlet channel 11 or the water outlet channel 12, the first sliding sleeve 20 can be slidably arranged on the inner wall of the first fixed sleeve 19, two first sliding blocks 22 are arranged between the first sliding sleeve 20 and the first fixed sleeve 19, the first sliding blocks 22 are fixedly arranged on the first sliding sleeve 20, two first sliding grooves 23 matched with the first sliding blocks 22 are axially arranged on the first fixed sleeve 19, the first sliding blocks 22 can be slidably arranged in the first sliding grooves 23, the first inserting block 21 is detachably arranged in the first sliding sleeve 20 in a penetrating manner, a first water passing channel 24 for water to pass through is arranged on the first inserting block 21, a plurality of first elastic clamping plates 25 are fixedly arranged at one end of the first fixed sleeve 19 close to the inner part of the valve body 10, the free end of the first elastic clamping plate 25 extends inwards and inclines towards the central axis of the first fixing sleeve 19, the first inserting block 21 is provided with a first clamping groove 26 for the free end of the first elastic clamping plate 25 to extend into, the first sliding sleeve 20 can enable the first elastic clamping plate 25 to be separated from the first clamping groove 26 through sliding, the other end of the first inserting block 21 is fixedly connected with the water supply pipe 18 through gluing, and a second sealing device for preventing water leakage is arranged between the first inserting block 21 and the water inlet channel 11 or the water outlet channel 12. The second sealing device comprises an installation boss 27, a first sealing ring 28 and a second sealing ring 29, the installation boss 27 and the valve body 10 are integrally manufactured, the first sealing ring 28 and the second sealing ring 29 are respectively a first rubber sealing ring and a second rubber sealing ring, the installation boss 27 is radially arranged on the inner wall of the water inlet channel 11 or the water outlet channel 12, the first sealing ring 28 is arranged on the installation boss 27, the second sealing ring 29 is arranged on the first insertion block 21, and the first sealing ring 28 and the second sealing ring 29 are mutually compressed.

The second dismounting device comprises a second dismounting device body 30, the second dismounting device body 30 is provided with a second water channel 31 for a water body to pass through, a connecting end of the second dismounting device body 30 and the water supply pipe 18 is provided with a second fixing sleeve 32, a second sliding sleeve 33 and a second insert block 34, the second fixing sleeve 32 is fixedly arranged on the inner wall of the second dismounting device body 30, the second sliding sleeve 33 can be slidably arranged on the inner wall of the second fixing sleeve 32, two second sliding blocks 35 are arranged between the second sliding sleeve 33 and the second fixing sleeve 32, the second sliding blocks 35 are fixedly arranged on the second sliding sleeve 33, the second fixing sleeve 32 is axially provided with two second sliding grooves 36 matched with the second sliding blocks 35, the second sliding blocks 35 can be slidably arranged in the second sliding grooves 36, and the second insert block 34 is detachably arranged in the second sliding sleeve 33, the second insert block 34 is provided with a third water passage through which a water body passes, one end of the second fixing sleeve 32 close to the inside of the second dismounting device body 30 is fixedly provided with a plurality of second elastic clamping plates 38, the free ends of the second elastic clamping plates 38 extend inwards and incline towards the central axis of the second fixing sleeve 32, the second insert block 34 is provided with a second clamping groove 39 into which the free end of the second elastic clamping plate 38 extends, the second sliding sleeve 33 can make the second elastic clamping plates 38 separate from the second clamping groove 39 by sliding, the other end of the second insert block 34 is fixedly connected with the water supply pipe 18, and a third sealing device for preventing water body leakage is arranged between the second insert block 34 and the second dismounting device body 30. The third sealing device comprises an installation concave table 37 which is radially arranged along the inner wall of the second dismounting device body 30, a third sealing ring 40 is arranged on the installation concave table 37, a fourth sealing ring 41 is arranged on the second insertion block 34, the third sealing ring 40 and the fourth sealing ring 41 are respectively a third rubber sealing ring and a fourth rubber sealing ring, and the third sealing ring 40 and the fourth sealing ring 41 are mutually compressed. The connecting end of the second dismounting device body 30 and the underground pipeline is provided with a locking device for fixing the second dismounting device body 30 on the underground pipeline.

The locking device comprises a sleeve 42 fixedly arranged on the side wall of the second dismounting device body 30, a plurality of arc-shaped pressing pieces 43 are arranged outside the sleeve 42, the free ends of the arc-shaped pressing pieces 43 can be slightly unfolded or tightened, one ends of the arc-shaped pressing pieces 43 are fixedly arranged on the side wall of the second dismounting device body 30, a space 44 for the pipe wall of an underground pipeline to stretch into is reserved between the pressing pieces and the sleeve 42, the sleeve 42 and the arc-shaped pressing pieces 43 are integrally manufactured with the second dismounting device body 30, elastic sealing layers are respectively arranged on the outer wall of the sleeve 42 and the inner wall of the arc-shaped pressing pieces 43, the elastic sealing layers are elastic rubber layers 45, continuous external threads 46 are arranged outside the second dismounting device body 30 and on the arc-shaped pressing pieces 43, and a locking ring 47 for driving the arc-shaped pressing pieces 43 to tightly press the sleeve 42 is sleeved on the second dismounting device body 30, the diameter of the inner wall of the locking ring 47 is gradually reduced from the arc-shaped pressing piece 43 to the inner wall of the second dismounting device body 30, and the inner wall of the locking ring 47 is provided with an internal thread 48 matched with the external thread 46 on the second dismounting device body 30 and the arc-shaped pressing piece 43.

The use method of the anti-slip rush repair water diversion tee joint comprises the steps of sawing off a damaged underground pipeline, respectively installing two water supply pipes 18 on two sections of underground pipelines, inserting the pipe wall of the underground pipeline into the distance between the sleeve 42 and the arc-shaped pressing sheet 43, slightly expanding the arc-shaped pressing sheet 43 by the pipe wall of the underground pipeline, then rotating the locking ring 47 towards the free end direction of the arc-shaped pressing sheet 43, pressing the pipe wall of the underground pipeline by the arc-shaped pressing sheet 43 under the extrusion of the inner wall of the locking ring 47 and driving the pipe wall to be pressed towards the sleeve 42, hermetically connecting the underground pipeline and the second dismounting device body 30 under the sealing of the sleeve 42 and the elastic rubber layer 45 on the arc-shaped pressing sheet 43, then inserting the second inserting block 34 on the water supply pipes 18 into the second sliding sleeve 33 to enable the free end of the second elastic clamping plate 38 to be inserted into the second clamping groove 39 to limit the axial sliding of the second inserting block 34, meanwhile, the sealing between the second dismounting device body 30 and the water supply pipe 18 is realized under the pressing action of the third rubber sealing ring and the fourth rubber sealing ring.

Then, the other end of a water supply pipe 18 on a water supply source is communicated with a water inlet channel 11 of the valve body 10, the other water supply pipe 18 is communicated with a water outlet channel 12 on the valve body 10, a first inserting block 21 on the water supply pipe 18 is inserted into a first sliding sleeve 20, so that the free end of a first elastic clamping plate 25 is inserted into a first clamping groove 26, the axial sliding of the first inserting block 21 is limited, meanwhile, the water supply pipe 18 is in sealing connection with the valve body 10 under the pressing action of a first rubber sealing ring and a second rubber sealing ring, and a ball core 13 is driven to rotate by rotating a handle 16, so that the water inlet channel 11 of the valve body 10 is communicated with the water outlet channel 12 connected with the water supply pipe 18. The water supply pipes 18 are connected according to the actual underground waterway, and the water supply restoration of at most two underground pipelines can be realized.

The water supply source resumes the water supply, and the water body flows from the underground piping to the water supply pipe 18, then to the inside of the valve body 10, and then from the other water supply pipe 18 to the underground piping for supplying water to the user, achieving maintenance work without affecting the water use of the user. When a new underground pipeline is replaced, the water supply source is cut off, the locking ring 47 is rotated reversely, the pipe wall of the underground pipeline is pulled out from the sleeve 42 and the arc-shaped pressing sheet 43, and then the two ends of the new underground pipeline are connected with the original underground pipeline.

The utility model discloses can pack up the delivery pipe 18 when packing up the saving with valve body 10 is integrative, also can hold the delivery pipe 18 and dismantle on the valve body 10 and get up the reason alone, slide first sliding sleeve 20 and make first elasticity cardboard 25 on the first fixed cover 19 break away from first draw-in groove 26, later with first inserted block 21 follow first sliding sleeve 20 in extract can, the same reason also can be extracted second inserted block 34 from second dismouting device body 30.

Having shown and described the basic principles and essential features of the invention and its advantages, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but is susceptible to various changes and modifications without departing from the spirit and scope of the invention, all of which are intended to be covered by the appended claims and their equivalents.

Claims

1. Water diversion tee bend is salvageed to anticreep, including the valve body, inhalant canal, two water outlet channel have been seted up on the valve body, be provided with the ball core that is used for controlling fluid to open and close and move towards between inhalant canal and the water outlet channel, first passageway has been seted up to the valve body upper end, the valve rod is worn to be equipped with by first passageway, the valve rod upper end is provided with and is used for the drive valve rod pivoted opening and closing piece, lower tip with the ball core is connected, be provided with first sealing device, its characterized in that between inhalant canal, water outlet channel and the ball core respectively: the water supply device is characterized in that free ends of the water inlet channel and the water outlet channel are respectively detachably provided with a water supply pipe which can be bent and stretched at will, first dismounting devices which can be quickly dismounted are respectively arranged between the water supply pipe and the water inlet channel and between the water supply pipe and the water outlet channel, and the other end of the water supply pipe is provided with a second dismounting device which is used for quickly dismounting and mounting the water supply pipe and an underground pipeline.

2. The three-way pipe of claim 1, which is characterized in that: the first dismounting device comprises a first fixed sleeve, a first sliding sleeve and a first inserting block, the first fixed sleeve is fixedly arranged on the inner wall of the water inlet channel or the water outlet channel, the first sliding sleeve can be arranged on the inner wall of the first fixed sleeve in a sliding manner, the first inserting block is detachably arranged in the first sliding sleeve in a penetrating manner, the first inserting block is provided with a first water passing channel for water to pass through, one end of the first fixed sleeve, which is close to the inner part of the valve body, is fixedly provided with a plurality of first elastic clamping plates, the free ends of the first elastic clamping plates extend inwards and incline towards the central axis of the first fixed sleeve, the first inserting block is provided with a first clamping groove for the free end of the first elastic clamping plate to extend into, the first sliding sleeve can enable the first elastic clamping plates to be separated from the first clamping groove through sliding, and the other end of the first inserting block is fixedly connected with the water supply pipe, and a second sealing device for preventing water body leakage is arranged between the first insert block and the water inlet channel or the water outlet channel.

3. The three-way pipe of claim 2, which is characterized in that: the first sliding sleeve and the first fixed sleeve are provided with a plurality of first sliding blocks therebetween, the first sliding blocks are fixedly arranged on the first sliding sleeve, the first fixed sleeve is axially provided with a plurality of first sliding grooves matched with the first sliding blocks, and the first sliding blocks can be slidably arranged in the first sliding grooves.

4. The three-way pipe of claim 2, which is characterized in that: the second sealing device comprises an installation boss, a first sealing ring and a second sealing ring, the installation boss is radially arranged on the inner wall of the water inlet channel or the water outlet channel, the first sealing ring is arranged on the installation boss, the second sealing ring is arranged on the first insertion block, and the first sealing ring and the second sealing ring are mutually compressed.

5. The three-way pipe of claim 1, which is characterized in that: the second dismounting device comprises a second dismounting device body, the second dismounting device body is provided with a second water channel for water to pass through, the connecting end of the second dismounting device body and the water supply pipe is provided with a second fixing sleeve, a second sliding sleeve and a second insert block, the second fixing sleeve is fixedly arranged on the inner wall of the second dismounting device body, the second sliding sleeve can be arranged on the inner wall of the second fixing sleeve in a sliding way, the second insert block is detachably arranged in the second sliding sleeve in a penetrating way, the second insert block is provided with a third water channel for water to pass through, one end of the second fixing sleeve close to the inner part of the second dismounting device body is fixedly provided with a plurality of second elastic clamping plates, the free ends of the second elastic clamping plates extend inwards and incline to the central axis of the second fixing sleeve, and the second insert block is provided with a second clamping groove for the free end of the second elastic clamping plate to extend into, the second sliding sleeve can enable the second elastic clamping plate to be separated from the second clamping groove through sliding, the other end of the second inserting block is fixedly connected with the water supply pipe, a third sealing device for preventing water leakage is arranged between the second inserting block and the second dismounting device body, and a locking device for fixing the second dismounting device body on an underground pipeline is arranged at the connecting end of the second dismounting device body and the underground pipeline.

6. The three-way pipe of claim 5, which is characterized in that: the locking device comprises a sleeve fixedly arranged on the side wall of the second dismounting device body, a plurality of arc pressing pieces are arranged outside the sleeve, one ends of the arc pressing pieces are fixedly arranged on the side wall of the second dismounting device body, a distance for the pipe wall of an underground pipeline to stretch into is reserved between the pressing pieces and the sleeve, continuous external threads are arranged outside the second dismounting device body and on the arc pressing pieces, a locking ring for driving the arc pressing pieces to tightly press the sleeve is sleeved on the second dismounting device body, the diameter of the inner wall of the locking ring is gradually reduced from the arc pressing pieces to the diameter of the inner wall of the second dismounting device body in the direction of the second dismounting device body, and internal threads matched with the external threads on the second dismounting device body and the arc pressing pieces are arranged on the inner wall of the locking ring.

7. The three-way pipe of claim 6, which is characterized in that: and the outer wall of the sleeve and the inner wall of the arc-shaped pressing sheet are respectively provided with an elastic sealing layer.

8. The three-way pipe of claim 5, which is characterized in that: the third sealing device comprises an installation concave table which is radially arranged along the inner wall of the second dismounting device body, a third sealing ring is arranged on the installation concave table, a fourth sealing ring is arranged on the second inserting block, and the third sealing ring and the fourth sealing ring are mutually compressed.

9. The three-way pipe of claim 1, which is characterized in that: the water supply pipe is a corrugated pipe.